Abyss Locker Ransomware: A Growing Threat to Virtualized Environments

Red | Attack Report
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Abyss Locker is a ransomware group mainly targeting VMware ESXi servers and corporate networks using vulnerabilities in VPN appliances and SSH exploits. The group exfiltrates data before encrypting systems, demanding ransom payments while leveraging double extortion tactics. Their latest attacks focus on critical network devices, making them a significant cybersecurity threat in 2025. Their expanding attacks highlight the need for strong cybersecurity measures, including regular patching, backup security, and network monitoring.

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Cyber Horizons 2025

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